EP0543813A1 - A method of foaming plastic materials and a blowing agent for use therewith - Google Patents
A method of foaming plastic materials and a blowing agent for use therewithInfo
- Publication number
- EP0543813A1 EP0543813A1 EP19910900740 EP91900740A EP0543813A1 EP 0543813 A1 EP0543813 A1 EP 0543813A1 EP 19910900740 EP19910900740 EP 19910900740 EP 91900740 A EP91900740 A EP 91900740A EP 0543813 A1 EP0543813 A1 EP 0543813A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blowing agent
- mixture
- substances
- foam
- boiling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
Definitions
- a method of foaming plastic materials and a blowing agent for use therewith is provided.
- the present invention relates to a method of foam ⁇ ing plastic, preferably polyurethane, for producing a plastic foam, whereby a liquid plastic substance is brought to expand into foam by admixing and boiling of a blowing agent.
- foam ⁇ ing plastic preferably polyurethane
- polyurethane foam it has been traditional to use the blowing agent -ll, but as well known this substance has come under well-founded suspicion of being ozone decomposing, such that for safeguarding the ozone layer of the earth this substance should not be used any longer.
- FC-134A The boiling point of FC-134A is -26.5°C, and it has been found that this substance is usable not only to ⁇ gether with the said other substance, but even as a substitute for the R-22 in the mixture according to O89/00594, that is where the substance is effective in admixture with 1.1.1. trichloroethane having the boiling point of 75-76°C.
- the other of the said two substances has a boiling point of 87°C, and the substance is usable with very good results in admixture with FC-134A, but also in admixture with R-22, i.e. as a substitute for 1.1.1. trichloroethane.
- FC-134A a boiling point of 87°C
- R-22 i.e. as a substitute for 1.1.1. trichloroethane.
- the more attractive mixture will be the one with FC-134A, because of its extremely low ozone decomposing effect.
- blowing agent mixtures consisting of components of mutually different boiling points, but it is an impor ⁇ tant characteristic for the present invention as well as for the invention according to W089/00594 that the mix ⁇ tures here concerned are effective and are handable and operative by atmospheric pressure and ambient working temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Les efforts intensifs de recherche de produits de substitution sans danger du fréon utilisé comme agent gonflant dans la production de matières transformées en mousse, n'ont permis jusqu'à maintenant, d'obtenir que très peu de substances utilisables dans des conditions de pression et de température ambiantes. Le mélange de trichloroéthane et de R-22, bien qu'il ait un intêret particulier, présente un certain effet de décomposition de l'ozone. Toutefois, selon l'invention, il est possible de remplacer ces deux substances entièrement ou partiellement par du trichloroéthylène et de tétrafluoroéthane, respectivement, ces substances présentant à la fois une utilisation idoine et une décomposition négligeable de l'ozone.The intensive efforts to find safe substitutes for the freon used as a blowing agent in the production of materials transformed into foam, have so far made it possible to obtain very few substances which can be used under pressure and of ambient temperature. The mixture of trichloroethane and R-22, although it has a particular interest, has a certain effect of decomposition of ozone. However, according to the invention, it is possible to replace these two substances entirely or partially with trichlorethylene and tetrafluoroethane, respectively, these substances having both a suitable use and a negligible decomposition of ozone.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK6352/89 | 1989-12-14 | ||
DK635289A DK635289D0 (en) | 1989-12-14 | 1989-12-14 | PROCEDURE FOR FOAMING PLASTIC MATERIALS AND FUEL FOR USE THEREOF |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0543813A1 true EP0543813A1 (en) | 1993-06-02 |
Family
ID=8148626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910900740 Withdrawn EP0543813A1 (en) | 1989-12-14 | 1990-12-14 | A method of foaming plastic materials and a blowing agent for use therewith |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0543813A1 (en) |
AU (1) | AU6960491A (en) |
DK (1) | DK635289D0 (en) |
WO (1) | WO1991009077A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5506275A (en) * | 1995-05-15 | 1996-04-09 | Basf Corporation | 1,1,1,2-tetrafluoroethane as a blowing agent in integral skin polyurethane shoe soles |
CA2107274C (en) * | 1992-12-31 | 1998-11-03 | Valeri L. Valoppi | 1,1,1,2-tetrafluoroethane as a blowing agent in integral skin polyurethane shoe soles |
US6100229A (en) * | 1998-01-12 | 2000-08-08 | Alliedsignal Inc. | Compositions of 1,1,1,3,3,-pentafluoropropane and chlorinated ethylenes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL87084A (en) * | 1987-07-16 | 1992-03-29 | Ostergaard Hans Horgen | Method,compound and blowing agent for making plastic foam |
BR8900726A (en) * | 1988-02-22 | 1989-10-17 | Du Pont | PROCESS FOR THE PREPARATION OF A MIXTURE USED IN THE MANUFACTURE OF POLYURETHANE FOAM AND POLYURETHANE FOAM |
US4996242A (en) * | 1989-05-22 | 1991-02-26 | The Dow Chemical Company | Polyurethane foams manufactured with mixed gas/liquid blowing agents |
-
1989
- 1989-12-14 DK DK635289A patent/DK635289D0/en not_active Application Discontinuation
-
1990
- 1990-12-14 AU AU69604/91A patent/AU6960491A/en not_active Abandoned
- 1990-12-14 WO PCT/DK1990/000328 patent/WO1991009077A1/en not_active Application Discontinuation
- 1990-12-14 EP EP19910900740 patent/EP0543813A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9109077A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU6960491A (en) | 1991-07-18 |
WO1991009077A1 (en) | 1991-06-27 |
DK635289D0 (en) | 1989-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19920612 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE DK GB IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19940701 |